The gemstone, the mineral, the super material. (original) (raw)

What is Diamond?

-- A mineral composed of crystalline carbon
-- Lab-grown varieties are made by people
-- The world's most popular gemstone
-- A "super material" with many uses
-- Superior refractive index, dispersion, luster
-- Exceptional hardness, thermal conductivity

Red Diamonds

Red Diamonds are exceptionally rare. In a typical year, only a few diamonds earn a red color grade.

Gifts That Rock

Gifts That Rock - What are the most popular gift items in the Geology.com store?

Colored Diamonds

Colored Diamonds are diamonds with a noticeable body color. They can sell for over $1M/carat.

Brown Diamonds

Brown Diamonds are growing in popularity and are frequently seen in fashion jewelry.

Yellow Diamonds

Yellow Diamonds are the most valuable yellow gems and the 2nd most common fancy diamond.

Diamond: The Mineral

Diamond is a gem of exceptional beauty and a mineral with many industrial uses!

Blood Diamonds

Blood Diamonds are illegally traded diamonds that are often used to fund conflict.

US Diamond Mines

US Diamond Mines Will a mine in WY or CO break our gem diamond import dependence?

Blue Diamonds

Blue Diamonds are colored by a few boron atoms substituting for carbons in the diamond crystal.

Carbonado Diamond

Carbonado is an extremely tough variety of industrial diamond with exceptional cutting abilities.

Diamond Source Rocks

Kimberlite is a variety of peridotite, an igneous rock that can be a host rock of diamond.

Lab-Grown Diamonds

Lab-Grown Diamonds? What are they? Can people really make diamonds? Are they real?

Green Diamonds

Green Diamonds - one of the rarest and most valuable diamond colors.

Herkimer Diamonds

Herkimer Diamonds are doubly-terminated quartz crystals mined in New York.

Hardness Picks

Hardness Picks - Test for hardness with precise and easy-to-use hardness picks.

Geology Tools

Geology Tools Rock hammers, field bags, hand lenses, maps, hardness picks, gold pans.